ZN85-40.5 type vacuum circuit breaker
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Keywords: high and low voltage complete set-box type substation-ring network cabinet
Classification:
Circuit Breaker
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Product Description
Product Definition
ZN85-40.5 indoor high-voltage AC vacuum circuit breaker is suitable for three-phase AC 50Hz, rated voltage of 40.5kV indoor handcart switch cabinet, for industrial and mining enterprises, power plants and substations as a split load current, overload current, fault current, and for frequent operation of the site. Circuit breakers shall be designed, manufactured and inspected in accordance with GB/T 1984 and relevant standards.
Normal conditions of use
1. The ambient temperature is not higher than 40 ℃, not lower than -10 ℃ (allowed to be stored and transported at -30 ℃).
2. The altitude does not exceed 1500m.
3. Relative humidity: the daily average is not more than 95%, the monthly average is not more than 90%, the daily average of saturated vapor pressure is not more than 2.2 x 10-3Mpa, and the monthly average is not more than 1.8 x 10-3Mpa.
4. The seismic intensity does not exceed 8 degrees.
5. There is no fire, explosion hazard, serious pollution, chemical corrosion and violent vibration of the place.
Main technical parameters of products
| Name | Unit | Data |
| Rated voltage | kV | 40.5 |
| 1min power frequency withstand voltage (effective value) | kV | 95 |
| Lightning impulse withstand voltage (peak) | kV | 185 |
| Rated frequency | Hz | 50 |
| Rated current | A | 1250/1600/2000/2500 |
| Rated short-time withstand current | kA | 20/25/31.5 |
| Rated peak withstand current | kA | 50/63/80 |
| Rated short circuit duration | s | 4 |
| Rated short-circuit breaking current | kA | 20/25/31.5 |
| Rated short-circuit closing current | kA | 50/63/80 |
| Rated operating sequence | O-0.3s-CO-180s-CO | |
| Breaking time | ms | <80 |
| Rated short-circuit breaking current breaking times | Times | 20 |
| Breaking current of single capacitor bank | A | 630 |
| Back-to-back capacitor bank breaking current | A | 400 |
| Rated operating voltage | v | AC/DC 110、220 |
| Mechanical life | Times | 10000 |
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Address: No.26, Tuanshan East Road, Economic Development Zone, Lishui District, Nanjing City, Jiangsu Province
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